Place potatoes with cold water to cover by 2 inches and 1/ tsp salt in large saucepan. Bring to boil for 5 minutes. Add cabbage and boil for another 10 minutes until potatoes are tender.

Meanwhile, place green onion in sieve, pour boiling water over them and drain. Add drained onions to a medium saucepan with milk, butter and rest of salt and pepper, bring to a boil them remove from heat.

Drain cooked potatoes and cabbage and return to large sauce pan. Beat on low speeed with a hand held mixer until coarsely mashed. Increase speed to high and gradually add milk and onion mixture and continue to beat until potatoes are light and fluffy.